R.V.R. Elettronica TX20000U-KLC, Руководство пользователя и техническое руководство

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ELETTRONICA
Rev. 2.0 14/05/2015
237
User & Technical Manual
TX20000U-KLC
Then go to the Service menu, get power for exciter 1 to about 10-12 watts of excitement and
you will see that the modules will lead to a power of 750-800 W for about 15-20 seconds, then
will rise, the VPA voltage, from 20 volts to 50 volts, At this point you have unlocked the power
supplies and if there are no problems of ROS or FOLDBACK, the modules of power will rise
the power until they reach the power set in the Settings menu over 2 / 3 watts to keep the sa-
turation of amplifiers foldback.
Remember to check that the parameters match the test card, attached to the machine. If there
were significant differences it may be that the antenna or the filter cavity are incorrect.
Once the machine arrived at the power set and everything is ok, go on the trimmer on the front
panel of the individual amplifiers (PWR ADJ located between the LEDs) and set it up as the
single amplifier down of 50 watts, In this way, even in situations of power surges the machine
will not go up ever
Set the exciter 2 at the same power of exciter 1, if present.
Set exciter exchange automatically, even if only one exciter.
Put the final in REMOTE if you want to operate the GSM Telemetry (if installed).
If there is too unbalanced power on the dummy load inside the machine, operate on Phase
ADJ control on the front panel of the CCU (see Chap. 5.3 for explanation).
Check that the parameters of the machine remain stable.